does anyone know this memory card?

[Generale]

Hi there.
I have a memory card with a battery backed up clock that was in my Salvos A500.

The computer can't detect the RAM and the battery backed up clock only works sometimes, which I'm pretty sure is a ratted battery.

Does the card need some sort of RAM driver? I just think it's odd that the a500 completely fails to acknowledge its existence, even if the RAM were bad.

Here's some links to pics of it:

pic of it
..and the other side
Any help would be appreciated. Thanks for putting up with my incessant questions. But after all, if a person doesn't ask questions, they don't learn.

[Orjan]

http://www.amiga-hardware.com/showhardware.cgi?HARDID=1103

Seems stock to me... Perhaps its broken?

[Generale]

Thanks Orjan. You found in seconds that which I could not find! Probably is...not that there's much to get broken on it.

[Azryl]

Generale, JP1 in your pic is open, have you closed this jumper and tried the card?

Az

[Plaz]

I see the battery seems to be leaking. I would cut that off immediatly if it is. One of the memory chips could be having a problem. Have you tried removing them from the sockets and reinstalling them. This works on old chips many times. Normally a driver isn't needed for a card like that. That connection at capacitor C2 doesn't look good, but it shouldn't interfer with reading the memory.

Plaz

[Generale]

Yeah, I should remove the battery.

The connection on c2 does look bad, but it has 0 resistence, so that's okay.

with the jumper closed, I get a colour code on startup sometimes. Don't remember what it is. Sorry. I'll set up the ami next chance I get to find out. Actually I might try it in my other a500.

reseating the chips doesn't help either I'm afraid.

If it is a bad chip, would the amiga let me get away with removing 2 at a time to narrow it down? I wouldn't remove 1 of course because they are 256x8 chips.

Oh, while I think of it, Are the chips on these cards SRAM or DRAM? Just asking because I don't know how amigas deal with external memory. And if it is DRAM, what refresh type is it?